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Evidence has been found through years of...

Evidence has been found through years of study __________ children’s early sleeping problems are likely to continue when they grow up.

A. why               B. how            C. that            D. whether

 

C 【解析】 试题分析:考查同位语从句;通过分析句子结构,可知这个句子中包含一个同位语从句,说明evidence的内容,用that连接同位语从句,that在同位语从句中不作任何成分,且没有实际意义。句意:通过多年的研究已经发现了证据,孩子们早期的睡眠问题可能随着长大会继续。故选C 考点:考查同位语从句  
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